Figure 1: Sediment associated U fractions from sequential extractions.
From: Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits
Bars indicate concentration of uranium (in mg kg−1) within each fraction. Error bars indicate 1 s.d. from the mean of triplicate extractions. Total U concentrations (in mg kg−1) for the given depths (m-bgs) as obtained from HF digestions are as follows: 191.0 m: 231.86 mg kg−1; 194.0 m: 164.11 mg kg−1; 196.0 m: 237.96 mg kg−1; 198.0 m: 190.00 mg kg−1.
